Connecting 6 push buttons with ESP32 with 1 common pin

[StealthRT]

Hey all I have 6 buttons that have the following voltage:











I want to hook up a 4N25 to each one of these so I can use the ESP32 as a "virtual push" to each of these buttons. When the button is pressed the 3.2vdc goes to ground.









To minimize the amount of wire going to each one I have come up with the following:

















Is it possible to just hook 1 of the buttons left/bottom pins to all of the 4N25 chips so that I don't have to run 2 wires per button? Or is there a better way of doing this that will minimize the amount of wires?

The buttons are connected to a TM1650 chip.

 

[Delta Prime]

Your microcontroller unit esp32 will detect a single press of a mechanical analog switch as multiple presses of a switch, they call it chattering. You must debounce the switch.

https://esp32io.com/tutorials/esp32-button-debounce.

 

[Bluejets]

Adding to the above, looks to me like you are shorting out the 4n25 internal LED (ok...but) you have no current limit resistors.
Likewise for the open collector unless you intend to use software pullups.
All seems rather unnecessary....please supply a complete circuit diagram and the code. (no fritzing stuff thanks)

 

[Delta Prime]

Like the man said, circuit and code.
"Adding to the above, looks to me like. Your a cool cat
@Bluejets .